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I recently acquired a 92 Explorer with VERY low miles on it from a relative (Dad, we call him). My neighbor works at a ford dealer in parts and said there's a nylon or plastic part in the auto hub that is prone to failure. The replacement has been improved. Does anyone know what this part is and what it's called???
For now it works, but I'd like to do some preventative maintence.
If it's the part I'm thinking of, I think it's called a Cam assembly. Do you know what they did to improve it? Is it reasonably priced? Typically it's cheaper/stronger to replace the auto hubs with manual hubs when something breaks, because you have to buy the entire hub assembly. But, if Ford's done something to change that....
I'll have to ask him again. It's been awhile since this subject came up, but I had the impression that it was a replaceable part.
Maybe I had my old Suburban in mind when he was describing it. I was able to revive its old auto hubs by replacing a nylon part as well, and I had that picture in mind. I'll let you know...
The plastic cams have always been prone to failure. The cams wear down or the plastic cracks and the vacuum actuator can fail. When I was the owner of an Explorer for several years I never encountered those probelms with the original equipment. I would have loved to replace them (funds said otherwise) just for the piece of mind.
When you remove the front wheels, the center section stays on. That plastic center is actually the outer housing for the hub locking mechanism. Made me feel uneasy knowing that. I found out when I was rotating the tires and the plastic hub cover fell away from the spindle/rotor with the wheel.